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OBJECT

NGC 6888 (Crescent Nebula) and surroundings (image is reduced-size | other sizes:  medium , original)

Distance:  5,000 light years

Telescope Takahashi FS-60C @ f/6.2
Mount Takahashi EM200 Temma II
Camera QSI 540wsg @ -15C
Filters Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2
Guider SX Lodestar
Settings 6x20min Ha, 2x5min L (bin1x1); 2x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
Date/Location

Notes
23 November 2016 - Las Cruces, NM

Published in Amateur Astronomy Magazine quarterly, Spring 2017  issue, pg 71 (screenshot).

This image is LHaRGB, where Ha was used in combination with Luminance and Ha:R (60:40) was used for the Red channel.

Copyright  Jeffrey O. Johnson

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